Heating attachment for lamps



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E. MARTiN EATING ATTACHMENT FOR LAMPS Filed Octs l0 Cia Patented ning. lil,

BRUN() MARTIN, SAGINAW, MICHIGAN.

HEATING ATTACHMENT FOR LAMPS.

Application filed ctober 10, 1923. Serial No. 667,779.

To all ai /wm t may concern- Be it known that l, Bruino lllanrrN, a citizen of the United States, residing at Saginaw, in the county of Saginaw and State oi Michigan, have invented certain new and useful Improvements in Heating Attachments for Lamps; and l do hereby declare the following to be a tull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

rl`his invention is a heating attachment for lamps and is adapted to be placed on an `ordinary'lrerosene illuminating burner, to thereby convert it into an effective heating burner.

The objects or' my improvement are to provide in the attachment means for increasing the etliciency of combustion and the amount of heat delivered, and to prevent formation oit' soot.

To attain these results my invention in chicles means for supplying additional oXygen to the lamp flame so that the llame will be changed from luminous to a nearly non-luminous heating flame and at the same time air currents that supply the oxygen will be prevented from distorting the shape of the flame or causing the flame to flicker or burn u nevenly.

A further object is to construct the inner and outer walls oi the heating device so they can be easily put together or separated.

My improvement also provides a spacing device for said walls whereby the space between them is utilized for heated air eirculation.

`With the foregoing and certain other objects in view which will appear later in the speciiications my invention comprisesl the devices described and claimed and the equivalents thereof.

ln the drawings Fig. l is a part sectional elevation of the heater, the burner shown by dotted lines.

Fig. 2 is a partly broken section taken on line 2-2 of Fig. l.

As is clearly shown in the drawings l is the usual lamp burner and 2 is a sheet metal ring which tits in the burner the same as the base ring of an ordinary lamp chimney.

3 is a line mesh perforated screen ot' cylindric form, whichl is removably seated in the ring 2, the upper part ot the screen projecting above the top oiz the burner l so as to partly enclose the lia-mes from said burner.

Fixed to the upper edge or ring 2 is an annular flat plate li'ormed with perforations 5, this plate in eiiect forming an outwardly projecting flange around the upper rim of ring 2. 6 is a part conical oltapered inner shell preferably formed of sheet metal and provided with an observation window 7 through which the lamp llame may be inspected.

The top rim ot the tapered shell 6 is contracted or curved inwardly, as shown at 8, and the bottom edge is secured, as by double seeming, to the outer circumference of the annular plate l.

The outer shell 9 encloses the shell G, shown in Fig. l. This shell 9 is provided at suitable intervals around its circumiference and near. its top and bottom with inwardly projecting lugs l0 which are preterably ormed by cutting a substantially semicircular slit in the wall of shell 9 and bending the severed part to form an inwardly -proj ecting` integral lug l0. rlhe inner ends ot lugs l0 rest against the shell 6 to hold the outer shell 9 in proper position with respect to the inner shell 6.

The openings thus formed in the shell communicate with the space between the two shells and improve the circulation between them.

The outer shell is formed with an outwardly projecting lug ll, to which is secured a suitable handle 1Q by means et bolts 13, the handle 12 being also riveted or otherwise secured to the annular plate 4, as shown in the drawings.

By removing the bolt l?) the outerI shellL 9 can be removed. When this shell is in place, as shown, the bolt 13 tightly clamps` the shell 9 to handle l2 and to the tapered inner shell 6.

When burner l is lighted it talres air through its perforated lower part as is usual in kerosene lamps, but when the heating attachment is applied to the burner by in serting` the ring 2, as shown in Fig. l, a small additional amount of air is admitted through the perforations 5 oi' the annular plate et. Some of the air so admitted rises in the inner shell 6 and the remainder, carrying an additional supply of oxygen, passes through the peri'orations et screen 3 and thereby increases the eli'ectiveness of combustion oi' the flames. Adding this eXtra supply of air would, Without screen 3, cause iiickering and uneven burning or' the llames, but With the screen in place the velocity of the air striking the flames is reduced so that no flickering takes place, even though the lamp be subjected to strong gusts ol wind.

Heated air rises Within the inner shell '6 and previous to its escape through the top the "currentol hot air is contracted by the defleeting top 8, as shown by the arrow in Fig. l, thereby increasing the draft and prevei'iting down currents `et cold 'air in the inner shell 6.

" The 'space between the inner and outer shells is 'an air' circulating and heating space 'andprevents overheating the wall of the inner shell. f Italso induces a strong cir` c't'il'ationl of Warm air up through the annular space between the shells.

By the means above described I have pro* duced 'a simple and relatively inexpensive heating device that can be applied to an ordinary'kerosene lamp, either of the one burner Aor multiple burner type. It quickly Converts av lamp from an illuminating device into an effective heating apparatus that can be used for either indoor or outdoor cooking, or for any like purposes.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

In combination, a lamp burner and a heating device comprising an annular ring, a perle-rated cylindrical screen removably seated in said ring and projecting above the top of said burner, a tapered innerI shell having its top edge contracted and its bottom edge surrounding said screen and spaced apart therelroin, an annular perlorated plate secured to the upper end et said ring and to the bottom edge ot said inner shell, a tapered outer shell formed near its top and bottoni with inwardly projecting integral lugs taking against said inner shell, said outer shell also formed with a projecting lug and a handle removably secured to said lug and also secured to said annular plate, `lor the purposes set ilortli.

In testimony whereof, I aliix my signature.

BRUNO MARTIN. 

